Manual quick connecting device suitable for FSRU ship hose conveying system

The invention discloses a manual quick connecting device suitable for an FSRU ship hose conveying system. The manual quick connecting device comprises a main body structure, a locking subassembly, a guide mechanism, a sealing structure and the like. The device is connected with a flange at the front end of a hose through a bolt, when an FSRU ship carries out LNG conveying work, target flanges are guided to be in butt joint through a guide arm, then a pressing nut is screwed to adjust a threaded lead screw to move downwards, and therefore a pressing block is driven to move downwards, the target flanges are gradually pressed, butt joint reliability is guaranteed, and the purpose of safely and stably conveying LNG is achieved; guide arms are uniformly distributed on the outer ring of the ship flange; the locking subassembly comprises a base, a sleeve, a limiting piece, a threaded lead screw, a pressing block, an anti-falling nut, a gasket, a heat insulation pad and a pressing nut. The device is provided with the